Dual CoreXY kinematics?

Happy user here, with a working Hybrid-CoreXY setup, using mainline Klipper, for many months:

Now, I’m looking at trying something fundamentally different to get two carriages, though: two parallel CoreXY gantries. But the [dual_carriage] option seems IDEX-specific, vs Dual CoreXY.

Does anyone have any pointers to something the exists in this direction w/Klipper? If not… any sense for the amount of work this would require?

There’s some related stuff, but I couldn’t find anything.
[Feature] CoreXYU, CoreXYUV, CoreXYUVAB , and Beyond Kinematics · Issue #3130 · Klipper3d/klipper · GitHub (related, but couldn’t find any hints)
https://www.reddit.com/r/klippers/comments/hxskrj/corexyuv/ (out of date)
[Question] Core XYU possible? · Issue #1401 · Klipper3d/klipper · GitHub CoreXYU?
Something more than “see docs/Code_Overview.md” is what I’m hoping for.

It seems like Duet2+Duex5 already support this setup, but I’d rather stick with Klipper if possible, for CAN toolhead support and general affordability.

Replying to my own thread, since nobody replied originally:

I’ve released a full open-source design for a Dual CoreXY printer, called Dueling Zero.

It prints, and with Tircown’s help I was able to get a proper Klipper implementation working.

Woo.

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Looks great, will join the discussion as I’m planning to implement the same kinematics to a VzBoT 330 style printer.

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